Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 1 13 h = _____ min
- 8 620 m = _____ m (Give the answer in decimal.)
- 3 14 km = _____ m
- 4 25 kg = _____ g
(a)
1 h = 60 min
13 h =
13 x 60 = 20 min
1
13 h = 60 + 20 = 80 min
(b)
620 m =
30100 m = 0.3 m
8 m + 0.3 m = 8.3 m
(c)
1 km = 1000 m
3 km = 3000 m
14 km =
14 x 1000 = 250 m
3
14 km
= 3000 + 250
= 3250 m
(d)
1 kg = 1000 g
4 kg = 4000 g
25 kg =
25 x 1000 = 400 g
4
25 kg
= 4000 + 400
= 4400 g
Answer(s): 80, 8.3, 3250, 4400